Here's how you could solve this problem:
(root of 5)√x^4 multiplied by (root of 5)√x^4
- combine like terms
- you should get (root 5)√x^8 -> because, with the Laws of Exponents, multiplying like terms with exponents is seen to be equivalent to adding the exponents
- finally, write out x^(5/5) multiplied by x^(3/5)
- this is because you've taken out the largest multiple of 5 in the exponent that you had (5 is the largest multiple of 5 out of 8), and you subtracted 8 by 5 to get the remaining exponent of the other term
- simply exponents, and you're done :D :D :D :D :D